qman_portals.c

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    1 /*-
    2  * Copyright (c) 2012 Semihalf.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include "opt_platform.h"
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/12.0/sys/dev/dpaa/qman_portals.c 307542 2016-10-18 00:55:15Z jhibbits $");
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/bus.h>
   35 #include <sys/lock.h>
   36 #include <sys/module.h>
   37 #include <sys/mutex.h>
   38 #include <sys/proc.h>
   39 #include <sys/pcpu.h>
   40 #include <sys/sched.h>
   41 
   42 #include <machine/bus.h>
   43 #include <machine/tlb.h>
   44 
   45 #include <dev/ofw/ofw_bus.h>
   46 #include <dev/ofw/ofw_bus_subr.h>
   47 
   48 #include <powerpc/mpc85xx/mpc85xx.h>
   49 
   50 #include "qman.h"
   51 #include "portals.h"
   52 
   53 extern e_RxStoreResponse qman_received_frame_callback(t_Handle, t_Handle,
   54     t_Handle, uint32_t, t_DpaaFD *);
   55 extern e_RxStoreResponse qman_rejected_frame_callback(t_Handle, t_Handle,
   56     t_Handle, uint32_t, t_DpaaFD *, t_QmRejectedFrameInfo *);
   57 
   58 t_Handle qman_portal_setup(struct qman_softc *);
   59 
   60 struct dpaa_portals_softc *qp_sc;
   61 
   62 int
   63 qman_portals_attach(device_t dev)
   64 {
   65         struct dpaa_portals_softc *sc;
   66 
   67         sc = qp_sc = device_get_softc(dev);
   68         
   69         /* Map bman portal to physical address space */
   70         if (law_enable(OCP85XX_TGTIF_QMAN, sc->sc_dp_pa, sc->sc_dp_size)) {
   71                 qman_portals_detach(dev);
   72                 return (ENXIO);
   73         }
   74         /* Set portal properties for XX_VirtToPhys() */
   75         XX_PortalSetInfo(dev);
   76 
   77         return (bus_generic_attach(dev));
   78 }
   79 
   80 int
   81 qman_portals_detach(device_t dev)
   82 {
   83         struct dpaa_portals_softc *sc;
   84         int i;
   85 
   86         qp_sc = NULL;
   87         sc = device_get_softc(dev);
   88 
   89         for (i = 0; i < ARRAY_SIZE(sc->sc_dp); i++) {
   90                 if (sc->sc_dp[i].dp_ph != NULL) {
   91                         thread_lock(curthread);
   92                         sched_bind(curthread, i);
   93                         thread_unlock(curthread);
   94 
   95                         QM_PORTAL_Free(sc->sc_dp[i].dp_ph);
   96 
   97                         thread_lock(curthread);
   98                         sched_unbind(curthread);
   99                         thread_unlock(curthread);
  100                 }
  101 
  102                 if (sc->sc_dp[i].dp_ires != NULL) {
  103                         XX_DeallocIntr((uintptr_t)sc->sc_dp[i].dp_ires);
  104                         bus_release_resource(dev, SYS_RES_IRQ,
  105                             sc->sc_dp[i].dp_irid, sc->sc_dp[i].dp_ires);
  106                 }
  107         }
  108         for (i = 0; i < ARRAY_SIZE(sc->sc_rres); i++) {
  109                 if (sc->sc_rres[i] != NULL)
  110                         bus_release_resource(dev, SYS_RES_MEMORY,
  111                             sc->sc_rrid[i],
  112                             sc->sc_rres[i]);
  113         }
  114 
  115         return (0);
  116 }
  117 
  118 t_Handle
  119 qman_portal_setup(struct qman_softc *qsc)
  120 {
  121         struct dpaa_portals_softc *sc;
  122         t_QmPortalParam qpp;
  123         unsigned int cpu;
  124         uintptr_t p;
  125         t_Handle portal;
  126 
  127         /* Return NULL if we're not ready or while detach */
  128         if (qp_sc == NULL)
  129                 return (NULL);
  130 
  131         sc = qp_sc;
  132 
  133         sched_pin();
  134         portal = NULL;
  135         cpu = PCPU_GET(cpuid);
  136 
  137         /* Check if portal is ready */
  138         while (atomic_cmpset_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph,
  139             0, -1) == 0) {
  140                 p = atomic_load_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph);
  141 
  142                 /* Return if portal is already initialized */
  143                 if (p != 0 && p != -1) {
  144                         sched_unpin();
  145                         return ((t_Handle)p);
  146                 }
  147 
  148                 /* Not inititialized and "owned" by another thread */
  149                 thread_lock(curthread);
  150                 mi_switch(SW_VOL, NULL);
  151                 thread_unlock(curthread);
  152         }
  153 
  154         /* Map portal registers */
  155         dpaa_portal_map_registers(sc);
  156 
  157         /* Configure and initialize portal */
  158         qpp.ceBaseAddress = rman_get_bushandle(sc->sc_rres[0]);
  159         qpp.ciBaseAddress = rman_get_bushandle(sc->sc_rres[1]);
  160         qpp.h_Qm = qsc->sc_qh;
  161         qpp.swPortalId = cpu;
  162         qpp.irq = (uintptr_t)sc->sc_dp[cpu].dp_ires;
  163         qpp.fdLiodnOffset = 0;
  164         qpp.f_DfltFrame = qman_received_frame_callback;
  165         qpp.f_RejectedFrame = qman_rejected_frame_callback;
  166         qpp.h_App = qsc;
  167 
  168         portal = QM_PORTAL_Config(&qpp);
  169         if (portal == NULL)
  170                 goto err;
  171 
  172         if (QM_PORTAL_Init(portal) != E_OK)
  173                 goto err;
  174 
  175         if (QM_PORTAL_AddPoolChannel(portal, QMAN_COMMON_POOL_CHANNEL) != E_OK)
  176                 goto err;
  177 
  178         atomic_store_rel_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph,
  179             (uintptr_t)portal);
  180         sched_unpin();
  181 
  182         return (portal);
  183 
  184 err:
  185         if (portal != NULL)
  186                 QM_PORTAL_Free(portal);
  187 
  188         atomic_store_rel_32((uint32_t *)&sc->sc_dp[cpu].dp_ph, 0);
  189         sched_unpin();
  190 
  191         return (NULL);
  192 }

Cache object: 221f6089f0ba867865b9b8e7c563ff05

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FreeBSD/Linux Kernel Cross Reference sys/dev/dpaa/qman_portals.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/dpaa/qman_portals.c